/*
 * Copyright (c) 2003-2010, Live Media Pty. Ltd.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright notice, this list of
 *     conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright notice, this list of
 *     conditions and the following disclaimer in the documentation and/or other materials
 *     provided with the distribution.
 *  3. Neither the name of Live Media nor the names of its contributors may be used to endorse
 *     or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.colony.networkvm.instruction;

import java.io.IOException;

import com.argot.TypeException;
import com.argot.TypeLibraryWriter;
import com.argot.TypeMap;
import com.argot.TypeOutputStream;
import com.argot.TypeWriter;
import com.argot.common.UInt16;
import com.colony.networkvm.machine.NvmInstance;
import com.colony.remote.RemoteException;

public class NvmStoreHeapObject
implements NvmInstruction
{
    public static final String TYPENAME = "nvm.instruction.store_heap_object";
	
	private int _index;
	
	public NvmStoreHeapObject( int index )
	{
		_index = index;
	}
	
    public void execute(NvmInstance request) 
    throws RemoteException
    {
    	request.incProgramCounter();
    	
    	int id = request.peekId();
		Object o = request.pop();
    	if ( id == -1 )
    	{
    		try
            {
                int[] ids = request.getTypeLibrary().getId(o.getClass());
                if (ids.length!=1) 
                {
                	throw new RemoteException("Class bound to multiple types");
                }
                id = ids[0];
            }
            catch (TypeException e)
            {
                e.printStackTrace();
                throw new RemoteException( e.getMessage(), e );
            }
    	}
        request.storeHeapObject( _index, id, o );
        
    }

    private static class NvmStoreHeapObjectTypeWriter
    implements TypeWriter
    {
    	private TypeWriter _uint16;
    	
    	public NvmStoreHeapObjectTypeWriter(TypeMap map)
    	throws TypeException
    	{
    		_uint16 = map.getWriter(map.getStreamId(UInt16.TYPENAME)); 
    	}
    	
	    public void write(TypeOutputStream out, Object o) throws TypeException, IOException
	    {
			NvmStoreHeapObject instruction = (NvmStoreHeapObject) o;
			int id = instruction._index;
	    	
			_uint16.write( out, new Integer(id));
	    }
    }
    
    public static class NvmStoreHeapObjectTypeLibraryWriter
    implements TypeLibraryWriter
    {
		public TypeWriter getWriter(TypeMap map) 
		throws TypeException 
		{
			return new NvmStoreHeapObjectTypeWriter(map);
		}
    	
    }

}
